Quick Quotes: No Bruce Wayne because Arkham City is a action game, not a business simulator
"It’s a Batman game. He’s powerful and aspirational but you never lose sight of the fact that he is mortal. It’s such fertile ground and in Arkham City we will go deeper into the man behind the cowl by bringing in characters like Hugo Strange, who knows Batman’s true identity, and Talia al Ghul, who has a romantic relationship with him. Through those characters we see his vulnerable side but our aim has always been to make an action game, not a business simulator, and when you start thinking about what you would do while playing as Bruce Wayne, it doesn’t seem terribly exciting in comparison." - Rocksteady's Dax Ginn to Sony on why Bruce Wayne is not included in the Batman titles.